I have a 10.3" ballistic advantage hanson barrel with pinned lo pro gas block. Custom gas port of .072" to run .223 reliably but not be over gasses with 5.56 loads. Very low round count (i will check my logs and wdit post) all slow fire with cleaning between each shot for first 20 then every 3rd shot for a while.
I would like to trade for a 9-10" 300 blackout barrel of similar quality (no 4140 cmmg barrels or the like).
Each pays own shipping.
Pics up later tonight.